EXCESS VOLUMES AND EXCESS VISCOSITIES OF MIXTURES HALOHYDROCARBON PLUS 2-BUTANOL AT 298.15 AND 313.15 K

From density and viscosity measurements excess volumes, V-E, excess vi scosities, eta(E) and excess free energies of activation for viscous f low, G(E), have been determined at 298.15 and 313.15 K for the binary mixtures of a halogenated (Cl, Br) benzene or cyclohexane with 2-buta nol. The results show the influence of both the type of cyclic system and the halogen atom over the self-association of the 2-butanol. V-E p resents predominant positive values, only showing negative ones with a romatic derivatives at 298.15 K in a small zone. For eta(E) and G(E), all mixtures present negative values over the whole composition range at two temperatures.